Web Console UI bug in ECS

When attempting to update a service to a new task definition revision, the cluster and service name cannot be changed.

Steps to reproduce:

• Open a task definition from https://us-west-2.console.aws.amazon.com/ecs/home?region=us-west-2#/taskDefinitions
• Select a revision
• Under "Actions", select "Update Service"
• You now can't select the service to update